Fire-chamber for stoves, &amp;c.



No. 803,036. PATENTED 0GT.. 31, 1905. N. G. VOSLER. FIRE CHAMBER FORSTOVES, &0.

APPLICATION FILED APB-.18, 1904.

3 SHEETS-SHEET 1.

No. 803,036. PATENTED OCT. 31, 1905.

N. G. VOSLER.

FIRE CHAMBER FOR STOVBS, (@zo.

APPLICATION FILED APR. 18, 1904.

3 SHEETSSHEET 2.

- WITNESSES: I j INVENTOR. A eW/On 6*. Vos/en g ATTORNEY.

ANOREW. a. (mum 0a.. PMUYMMMAPMHQ WASHINGTON. n. c. t

No. 803,036. PATENTED OCT. 31 1905. N. G. VOSLER. FIRE CHAMBER FORSTOVES, &o.

APPLICATION FILED APR. 18, 1904.

3 SHEETS-SHEET 3.

Roe/Z602" UNITED STATES PATENT OFFICE.

FIRE-CHAMBER FOR STOVES, 81.0.

Specification of Letters Patent.

Patented Oct. 31, 1905.

Application filed April 18, 1904. Serial No. 203,777-

To all whom it 'nuty concern:

- Be it known that I, NEWTON G. VOSLER, a citizen of the United States,residing at Fort Collins, in the county of Larimer and State ofOolorado,have invented certain new and useful Improvements inFire-Chambers for Stoves, &c., of which the following is aspecification.

My invention relates to improvements in fire-chambers of stoves andkindred contrivances; and the main object of my invention is to producea fuel or fire chamber by which the greatest degree of heat may bedeveloped from the minimum of fuel, which in consequence will be mosteconomical in use, in which any kind of coal or slack may be used withsatisfactory results, which by consuming the greater part of thevolatile products of imperfect combustion will limit the expulsion ofblack sooty smoke, which by preventing the accumulation of gases willeliminate the danger of explosions, which will produce an even heat, andwhich will force the heat down and outwardly, which, as will beexplained, is of particular value in heatingstoves.

My device, furthermore, allows absolute control of the fire byregulation of the draft and is of such simple construction that thefuel-chamber of almost any stove now in use may be readily altered tocorrespond with the construction of the improved device,as shown anddescribed.

I attain these objects by the mechanism illustrated in the accompanyingdrawings, in which 7 Figure 1 represents a vertical section through aheating-stove having my improved fire-chamber; Fig. 2, a partial frontview of same; Fig. 3, a horizontal section taken along line 3 3, Fig. 1,looking downward; Fig. 4:, a similar section taken along line 4 4, Fig.1; Fig. 5, an enlarged view, partly in section and partly in elevation,of the lower portion of the device, as illustrated in Fig. 1; Fig. 6, across-section looking downward of the lower portion of the hood, asshown in Fig. 1. Figs. 7 and 8, partial sectional views of the lowerportion of the stove, showing modified form of construction; Fig. 9, avertical section taken through a kitchen-range provided with my improvedfire-chamber; Fig. 10, a vertical section taken along the line 10 10,;

Fig. 9, and Fig. 11 a vertical section taken through a hot-air furnaceprovided with my improved fire-chamber.

Similar reference characters refer to similar parts throughout thevarious views.

The improvements referred to consists chiefly in placing ahood insidethe fire-chamber and a certain distance from its sides, the lower edgeof said hood extending in close proximity to the upper surface of thegrate, thus dividing the interior of the erstwhile fuel and fire chamberinto a fuel-chamber and a surrounding combustion-chamber. Ashort conduitconnects the side of the hood with the feed-opening in the side of theouter casing, said opening being, as usual, closed by with the place ofcontact between the upper and lower portions of casing 5.

8 designates the conduit which connects the upper half of hood 7 withthe feed-opening 9, which may be closed by a door 10, provided with anumber of radial slots 10' and a register 11.

The grate 12 restson an inwardly-extending flange 13 on the lower edgeof section 5 of the outer casing, while base 6 of the stove is providedwith the usual ash-receptacle 14.

A door 15 affords access to the ash-chamber underneath the grate and is,like the fuel- -door 10, provided with radial slots 15 and a register16.

The cylindrical shell or casing forming the lower half 7 of hood 7 issurrounded by a correspondingly-shaped jacket 17, leaving an annularspace 19 between the two, which forms an air-jacket designed to preventdestruction of the lower part of hood 7, as well as to supply freshoxygen into chamber 18 between the hood 7 and the outer shell 5 of thestove.

The upper end of the air-jacket is closed a flange 20, extendingoutwardly from the ,upper edge of section 7 while a ring 21,

.ferably made of fire-clay or other refracgaterial, connects the twocylinders 7 andQ'Zat the lower edge of the hood.

A short conduit 22, preferably extending below the feed-opening 9,connects the airjacket with the surrounding atmosphere and may be closedby means of a door 23. The lower portion of cylinder 17 is provided witha number of holes 17, through which the heated air may flow from thejacket into the annular chamber 18.

The hood 7 is supported by means of lugs 24:, extending outwardly fromits lower edge and resting on a ring 25, secured to the inside ofsection 5 of easing 5 in close proximity to the upper surface of grate12.

Although not essential it is preferable that before feeding the fuelinto hood 7 a fire should be started on the grate. The fuel issubsequently fed through opening 9- on top of the fire and may extendinto the hood upto any desired height below opening 9. Register 16 indoor 15 being opened a draft is created which supplies the necessaryoxygen to the fire and sucks the smoke and other gases up around thehood and toward and through the smoke-pipe 26.

When passing apertures 17 in the lower part of cylinder 17, new oxygen,which, having been drawn into the air-jacket through conduit 22. isheated on its way to the outlets 17, will unite with the carbon andhydrogen containing volatile products of imperfect combustion arisingfrom the fire into the annular space 18, which surrounds hood 7 andwhich hydrogen will be ignition of the combustible matter contained inthe gases, which otherwise would have been, drawn through the chimneyinto the open, the effect of which is not only the production ofadditional heat, but also the elimination of black sooty'smoke, whichwhen expelled through the chimney is a menace to the general health ofthe community, as well as a declared enemy to cleanliness.

At certain intervals or whenever it is desired to create more heat inthe stove the register 11 in door 10 is opened and fresh oxygen isallowed to enter the hood. Before reaching the fuel the oxygen will beheated by'the gases and smoke contained in the hood, and when it isdrawn through the fuel it will not only cause more perfect combustion,but will draw the gases and smoke out of hood 7 through the fuel and thefire into the combustion-chamber 18, with the result that a greaterportion of them will be consumed by combin ing with the heated oxygenand by contact with the fire. By thus preventing the accumulation ofgases in the hood the danger of explosion is minimized and no smoke orobnoxious gases will be allowed to enterthe room when the register infuel-door is opened.

It will be observed from the foregoing explanation that another greatadvantage is derived from the use of my deviceviz., the fact that theopening of the fuel-door will create more draft and cause consumption ofsmoke and other volatile gases instead of retarding the draft anddriving the smoke and gases through the chimney, as is the case with theordinary stoves now in general use.

The lower part 5 of casing 5 may be perforated, as shown in Figs. 1, 2,3, 4:, and 5, in which case a shell 27, made of mica or other suitabletransparent or translucent material, is placed around the perforatedpart to prevent escape of gases-and smoke from the combustion-chamber18. This arrangement does in no way aid or otherwise effect the workingof the device, but is merely applied to impart a more cheerfulappearance by exposing the light of the fire on the outside of thestove.

The interior of base 6 of the stove is divided-into two chambers 6 and 6by means of a circular plate 28, placed between the lower portion ofcylinder 5 and the outside wall of the base. The lower chamber 6contains the ash-receptacle 14, while the outside surface of the upperchamber 6 has been provided with a number of apertures 29.

Owing to the location of the fire underneath the fuel and to the factthat the gases are drawn downwardly through the fire before proceedingto the smoke-pipe, the lower portionof the stove will be heated to agreater extent than the upper part, the result being that the lower partof the room will be heated equally as well'as the portions nearer theceiling, the even distribution of the heated air throughthe room beingaugmented to a certain extent by the air constantly circulating in-and.out ofchamber 6 through apertures 29,. said chamber being, as hereaboveexplained, located in the best-heated portion of the stove? A In usingcertain kinds of coals or slack the possibility exists that the fueldeposited on the grate min the hood. will become packed to "such adegree as to make it impossible for the air introduced through register11 and thegases and smoke contained in the upper part of the hoodto passthrough the fuel into the combustion-chamber. To obviate occurrences ofthis description, I provide the lower part 7 of hood 7 with internalperpendicular flutes or corrugations 30, which, no matter how close thefuel may be packed, will at all times leave channels between it and thewall of the hood to allow the air, gases, and smoke to pass from thehood into the annular chamber 18.

As it is essential that the lower edge of the hood should extend in asclose proximityas possible tov the grate and as it is equally importantthat there should be sufiicient room between the two to allow thevolatile products of combustion to enter chamber 18, I have scallopedthelower edge of hood 7, thus meeting both requirements, the lobes 31extend ing as near to the surface of the grate as may be desired, whilethe gases may find their way through the spaces between them.

It will be understood that instead of making the hood in two parts, asshown in the drawings, same may be made in one piece, especially if usedin smaller stoves. On the other hand, the hood may be made of severalsections to facilitate shipping, each section having its own air-jacketand inlets and outlets, if so desired.

For small stoves, in which the heat does not reach the degree attainedin larger structures and in which there is but a comparatively smallquantity of expelled smoke and gases, the air-jacket may be dispensedwith, the lower part of the hood being composed of a single cylinder, asillustrated in Figs. 7 and 8, the latter figure showing a form of stovein which the outer casing has been made solid and the mica coveringomitted in consequence.

The application of the hood-to fire-chambers of furnaces,kitchen-ranges, &c., is in substance similar to the stove hereabovedescribed, its shape and size differing according to the nature and sizeof the furnace in which it is to be applied.

In Figs. 9 and 10 is illustrated a kitchenrange comprising an outsidecasing 7 6, ovens 76*, fuel-chamber 77 smoke and gas chamber 78, andpipe 79. Hood 80 has been shown without an air-jacket, the formpreviously described for small stoves. It is made rectangular tocorrespond with the shape of the range and connects with thefeed-opening 81 by means of conduit 82. 83 designates the grate, abovewhich the hood is suspended, 8 1 the feed-door with register, 85 and 86the ashdoor with the direct-draft register 87. Hood 80 is supplied withlugs 88, (similar to lugs 2 1 on hood 7,) which rest upon ridges 89,secured to the sides of the fuel-chamber.

The volatile products of combustion may be made to pass around the ovensor can be directed to go directly over the hood to the chimney byvertically-disposed partitions 90, connecting the top of the hood withthe top plate of the range, and by proper manipulation of dampers 91 and92.

The application of my improvements to the fuel-chamber of a hot-airfurnace is illustrated in Fig. 11, in which 93 represents the outercasing, 94 the air-passage, 96 the fuelchamber, 97 the smoke-pipe, and98 the hotair fines. Hood 99 is, like the one described for the stove,composed of two parts 99 and 99, the lower one, 99. of which is providedwith a surrounding jacket 100, which being spaced from part 99 of thehood and closed on top and bottom forms an air-chamber around thelatter. Jacket 100, like that of the stove, is provided with apertures100. 101 is the conduit in the side of the hood, connecting it with thefeed-opening 102, which may be closed by feed-door 103', having aregister 10 1. The communication between the air-jacket and theatmosphere is established by conduit 105, extending underneath conduit101 and closed by door 106. The lower por tion of the hood is providedwith lugs 107, resting on a ring 108, secured to the inside of thefire-chamber.

109 is a grate over which the hood is suspended, 110 the ash-receptacle,and 111 the ash-door with the direct-draft register 112.

Among the many benefits derived from the use of my improved fire-chamberthe fact previously referred to that the opening of the feed-door doesnot retard combustion is of special advantage, while by propermanipulation of the two registers in the feed and ash doors the draft,and consequently the combustion, is under absolute control, thusenabling perfect regulation of the temperature.

Having thus described my invention, what I claim is- 1. A fire-chamberfor stoves and kindred contrivances, comprising in combination, a basehaving draft-regulating means, a casing extending upwardly therefrom,its lower portion extending inside said base and supporting a grate, ahood composed of two superimposed sections concentrically located insideand spaced from said casing, a jacket having apertures a certaindistance above its lower 5 edge, located around and spaced from thelower section, a conduit leading from the annular chamber between thelower section and the jacket, terminating outside said casing, a conduitconnecting the upper section of said hood with a feed-opening in saidcasing, and

IOO

a door having draft-regulating means. adapted to close said opening.

2. A fire-chamber for stoves and kindred contrivances, comprising incombination, a base having two superimposed chambers, the

upper one being perforated, while the lower a casing supported by saidbase, extending through the upper chamber and into the lower one, agrate supported at the lower extremity of said casing, a hoodconcentrically located inside and spaced from said casing, a conduitconnecting said hood with a feed-opening in the casing, and a doorhaving draft-regulating means adapted to close said opening.

3. A fire-chamber for stoves and kindred contrivances, comprising incombination, a base having draft-regulating means, a casing having asurrounding ring resting thereon and extending into said base, a rateresting on a flange extending inward y from the lower edge of saidcasing, a hood concentrically located inside and spaced from saidcasing, a conduit connecting said hood with a feed-opening in saidcasing, and a door having draft-regulating means adapted to close said 0ening.

4. fire-chamber for stoves and kindred contrivances, comprising incombination, a

base having draft-regulating means, a casing supported thereby, itslower portion extending inside said base and supporting a grate, a hoodconcentricallylocated inside and spaced from said casing, a conduitconnecting said hood with a feed-opening in said casing, a door havingdraft-regulatin means adapted to close said opening, a jacket havingapertures a predetermined distance above its lower edge, laced aroundsaid hood and spaced therefi om and from the surrounding casing, and aconduit communicating with the annular chamber formed between said hoodand said acket.

5. A fire-chamber for stoves and kindred contrivances, comprising incombination, a base having draft-regulating means, a casing supportedthereby, its lower portion extending into said base, and supporting agrate, a hood concentrically located inside and spaced from said casingand having outwardly-ext'ending lugs, resting on a projection in saidcasing above said grate, a acket located around said hood and spacedtherefrom and from the casing, a refractory ring connecting the lowerportions of said hood and said jacket, the latter having apertures abovesaid ring, a conduit communicating with the chamber formed between saidhood and said jacket, a conduit connecting the hood with a feed-openingin said casing, and a door having draft-regulating means adapted toclose said opening.

6. A fire-chamber for stoves and kindred contrivances, comprising incombination, a base having draft-regulating means, a casing supportedthereby, its lower portion extending inside said base and supporting agrate, a hood having a scalloped lower edge concentrically locatedinside and spaced from said casing, a conduit connecting said.

hood with a feed-opening in said casing, a door having draft-regulatingmeans adapted to close said opening, a jacket having aper-' tures apredetermined distance above its lower edge, placed around said hood andspaced therefrom and from the surrounding casing, and a conduitcommunicating with the annular chamber formed between said hood and saidjacket.

7. A fire-chamber for stoves and kindred contrivances, comprising incombination, a base having draft-regulating means, a casing supportedthereby, its lower portion extending into said base and supporting agrate, a hood having longitudinal corrugations along its inner surfaceconcentrically located inside and spaced from said casing, a conduitconnecting said hood with a feedopening in said casing, a door havingdraftregulating means adapted to close said opening, a jacket havingapertures a predetermined distance above its lower edge, placed aroundsaid hood and spaced therefrom and from the surrounding casing, and aconduit communicating with the annular chamber formed between said hoodand said jacket.

8. A fire-chamber for stoves and kindred contrivances, comprising incombination, a base having draft-regulating means, a partlyperforatedcasing supported thereby, its

lower portion extending inside said base and supporting a grate, atranslucent shell surrounding the perforated part, a hood concentricallylocated inside and spaced from said casing, a conduit connecting saidhood with a feed-opening in said casing, a door having.

necting said hood with a feed-opening in said casing, and a door havingdraft-regulating means adapted to close said opening.

10. A fire-chamber for stoves and kindred contrivances, comprising incombination, a

base having draft-regulating means, a casing extending upwardlytherefrom, and having an inwardly-extending flange, a grate supported bysaid flange, a hood concentrically located inside and spaced from saidcasing and having outwardly-extending lugs resting on a projectioninside said casing above the grate, a conduit connecting the hood with afeed-opening in the casing, and a door having draft-regulating meansadapted to close said opening.

11. A fire-chamber for stoves and kindred contrivances, comprising incombination, a base having draft-regulating means, a casing extendingupwardly therefrom and having an inwardly extending flange, a gratesupported by said flange, a hood concentrically located inside andspaced from said casing and having outwardly-extending lugs resting on aprojection inside said casing above the grate, a jacket having aperturesa predetermined distance above its lower edge, placed around said hoodand spaced therefrom and from the surrounding casing, a conduitcommunicating with the chamber formed between said hood and said jacket,a conduit connecting the hood with a feed-openin in the casing, and adoor having draft-regu ating means adapted to close said opening.

12. A fire-chamber for stoves and kindred contrivances, comprising incombination, a base having draft-regulating means, a casing extendingupwardly therefrom and having an inwardly-extending flange, a gratesupcasing, and a door having draft-regulating ported by said flange, ahood having longitumeans adapted to close said opening. 10 dinalcorrugations and a scalloped lower edge In testimony whereof I haveaffixed my concentrically located inside and spaced signature inpresence of two witnesses.

5 from said casing and having outwardly-ex- NEWTON G. VOSLER.

tending lugs resting on aprojection inside Witnesses: said casing abovethe grate, a conduit con- K. M. STUMP,

necting the hood with a feed-opening in the P. J. ROLLANDET.

